2023学年完整公开课版Switchpowersupplydesign

DesignandbudgetofmobilecommunicationengineeringSwitchpowersupplydesignCourseteam:XiaojiZhaoXuelianFangYueqiuDongLiuYang

SHENZHENPOLYTECHNICContents

1Statusofswitchpowersupplydesign

2Theoryfoundationofrectifiermoduledesign

3Exampleofrectifiermoduledesign1.

StatusofswitchpowersupplydesignPowerconsumptionstatisticsofbasestationequipmentP=UICalculationandselectionofbatterycapacitySwitchCapacitycalculationandselectionofswitchpowersupplyrectifiermodule220vCapacitycalculationandselectionofACdistributionboxCapacitycalculationandselectionoftransformerCapacitycalculationandselectionofDieselgeneratorPowerlineconfigurationoilwireElectricsupplyACmodulerectifier

Dieselgenerator

BATT1

BATT2MobilecommunicationequipmentOtherDCequipment1.Powerconsumptionstatistics—loadcurrentI2

Batteryconfigurationcapacity—chargingcurrentIc3

.RatedoutputcurrentofeachrectifierIme4

.Calculatingn，configurationredundancyIIcCapacitycalculationandselectionoftherectifiermodule:mainlybasedontheratedoutputcurrentIk:

Ik≥I+IcI:MaximumloadcurrentofDCequipment;Ic:Batterychargingcurrent；Ifitis10hoursequalizingchargeandbetterpowerstation：Ic=（0.1~0.15）*QSelectthenumberofrectifiermodules（n）：n+1（＜10）；

Redundancyprinciple。Whenthenumberisgreaterthan10,every10mustberedundant；

n≥Ik/ImeIme

：Ratedoutputcurrentofeachrectifier，usually30A。2.

TheoryfoundationofrectifiermoduledesignDCmoduleDCloadandequalizingchargetotalpowerCurrentRecentCurrentRecentSpecialtyLoadLoadVoltage-48V-48V（A）（A）（V）(KW)(KW)Actualdemandforequipmentelectricity1341669-481632Equalizingcharge200.0200.0-4810.010.0Actualdemand254186927431.

Powerconsumptionstatistics——I=669A2

Batteryconfigurationcapacity—Ic=200A3

.Ratedoutputcurrentofeachrectifier，Ime=30A4

.Calculatingn，configurationredundancy。Batteryconfigurationcapacityis2000Ah。10hoursequalizingchargeandbetterstation:Ic=0.1*Q=200An≥Ik/Imen≥（669+200）/30n≥29Whenthenumberisgreaterthan10,every10mustberedundant。So29+2=31。Theoutputcurrentofwholeswitchpowersupplyisablout1000A（30A*31）。3.

Exampleofrectifierm